An update that solves 21 vulnerabilities and has 98 fixes is now available.

Description:

The SUSE Linux Enterprise 12 SP3 kernel was updated to 4.4.155 to receive
various security and bugfixes.
The following security bugs were fixed:

CVE-2018-13093: Prevent NULL pointer dereference and panic in
lookup_slow()
on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs
image. This occured because of a lack of proper validation that cached
inodes are free during allocation (bnc#1100001).

CVE-2018-13095: Prevent denial of service (memory corruption and BUG)
that could have occurred for a corrupted xfs image upon encountering an
inode that is in extent format, but has more extents than fit in the
inode fork (bnc#1099999).

CVE-2018-13094: Prevent OOPS that may have occured for a corrupted xfs
image after xfs_da_shrink_inode() is called with a NULL bp (bnc#1100000).

CVE-2018-12896: Prevent integer overflow in the POSIX timer code that
was caused by the way the overrun accounting works. Depending on
interval and expiry time values, the overrun can be larger than INT_MAX,
but the accounting is int based. This basically made the accounting
values, which are visible to user space via timer_getoverrun(2) and
siginfo::si_overrun, random. This allowed a local user to cause a denial
of service (signed integer overflow) via crafted mmap, futex,
timer_create, and timer_settime system calls (bnc#1099922).

CVE-2018-16658: Prevent information leak in cdrom_ioctl_drive_status
that could have been used by local attackers to read kernel memory
(bnc#1107689).

CVE-2018-6555: The irda_setsockopt function allowed local users to cause
a denial of service (ias_object use-after-free and system crash) or
possibly have unspecified other impact via an AF_IRDA socket
(bnc#1106511).

CVE-2018-6554: Prevent memory leak in the irda_bind function that
allowed local users to cause a denial of service (memory consumption) by
repeatedly binding an AF_IRDA socket (bnc#1106509).

CVE-2018-1129: A flaw was found in the way signature calculation was
handled by cephx authentication protocol. An attacker having access to
ceph cluster network who is able to alter the message payload was able
to bypass signature checks done by cephx protocol (bnc#1096748).

CVE-2018-1128: It was found that cephx authentication protocol did not
verify ceph clients correctly and was vulnerable to replay attack. Any
attacker having access to ceph cluster network who is able to sniff
packets on network can use this vulnerability to authenticate with ceph
service and perform actions allowed by ceph service (bnc#1096748).

CVE-2018-10938: A crafted network packet sent remotely by an attacker
forced the kernel to enter an infinite loop in the cipso_v4_optptr()
function leading to a denial-of-service (bnc#1106016).

CVE-2018-15572: The spectre_v2_select_mitigation function did not always
fill RSB upon a context switch, which made it easier for attackers to
conduct userspace-userspace spectreRSB attacks (bnc#1102517).

CVE-2018-10902: Protect against concurrent access to prevent double
realloc (double free) in snd_rawmidi_input_params() and
snd_rawmidi_output_status(). A malicious local attacker could have used
this for privilege escalation (bnc#1105322 1105323).

CVE-2018-10883: A local user could have caused an out-of-bounds write in
jbd2_journal_dirty_metadata(), a denial of service, and a system crash
by mounting and operating on a crafted ext4 filesystem image
(bsc#1099863).

CVE-2018-10879: A local user could have caused a use-after-free in
ext4_xattr_set_entry function and a denial of service or unspecified
other impact by renaming a file in a crafted ext4 filesystem image
(bsc#1099844).

CVE-2018-10878: A local user could have caused an out-of-bounds write
and a denial of service or unspecified other impact by mounting and
operating a crafted ext4 filesystem image (bsc#1099813).

CVE-2018-10876: A use-after-free was possible in ext4_ext_remove_space()
function when mounting and operating a crafted ext4 image (bsc#1099811).

CVE-2018-10881: A local user could have caused an out-of-bound access in
ext4_get_group_info function, a denial of service, and a system crash by
mounting and operating on a crafted ext4 filesystem image (bsc#1099864).

CVE-2018-10882: A local user could have caused an out-of-bound write, a
denial of service, and a system crash by unmounting a crafted ext4
filesystem image (bsc#1099849).

CVE-2018-10880: Prevent stack-out-of-bounds write in the ext4 filesystem
code when mounting and writing to a crafted ext4 image in
ext4_update_inline_data(). An attacker could have used this to cause a
system crash and a denial of service (bsc#1099845).

SUSE CaaS Platform ALL:
To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

SUSE CaaS Platform 3.0:
To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.